A general article discussing philosophical issues arising in connection with Aristotle's "Generation of Animals" (Chapter from Blackwell's Companion to Aristotle).

This book examines an important area of Aristotle's philosophy: the generation of substances. While other changes presuppose the existence of a substance, substantial generation results in something genuinely new that did not exist before. The central argument of this book is that Aristotle defends a 'hylomorphic' model of substantial generation. In its most complete formulation, this model says that substantial generation involves three principles: matter, which is the subject from which the change proceeds; form, which is the end towards which (...) the process advances; and an efficient cause, which directs the process towards that form. By examining the development of this model across Aristotle's works, Devin Henry seeks to deepen our grasp on how the doctrine of hylomorphism - understood as a blueprint for thinking about the world - informs our understanding of the process by which new substances come into being. (shrink)

This book consolidates emerging research on Aristotle's science and ethics in order to explore the extent to which the concepts, methods, and practices he developed for scientific inquiry and explanation are used to investigate moral phenomena. Each chapter shows, in a different way, that Aristotle's ethics is much more like a science than it is typically represented. The upshot of this is twofold. First, uncovering the links between Aristotle's science and ethics promises to open up new and innovative directions for (...) research into his moral philosophy. Second, showing why Aristotle thinks ethics can never be fully assimilated to the model of science will help shed new light on his views about the limits of science. The volume thus promises to make a significant contribution to our understanding of the epistemological, metaphysical, and psychological foundations of Aristotle's ethics. (shrink)

In this paper I address an important question in Aristotle’s biology, What are the causal mechanisms behind the transmission of biological form? Aristotle’s answer to this question, I argue, is found in Generation of Animals Book 4 in connection with his investigation into the phenomenon of inheritance. There we are told that an organism’s reproductive material contains a set of "movements" which are derived from the various "potentials" of its nature (the internal principle of change that initiates and controls development). (...) These movements, I suggest, function as specialized vehicles for communicating the parts of the parent’s heritable form during the act of reproduction. After exploring the details of this mechanism, I then take up Aristotle’s theory of inheritance proper. At the heart of the theory are three general principles (or 'laws') that govern the interactions between the maternal and paternal movements, the outcome of which determines the pattern of inheritance for the offspring. Although this paper is primarily aimed at providing a detailed analysis of Aristotle’s account of inheritance, the results of that analysis have implications for other areas of Aristotle’s biology. One of the most interesting of these is the question of whether Aristotle’s biology is anti-evolutionary (as traditionally assumed) or whether (as I argue) it leaves room for a theory of evolution by natural selection, even if Aristotle himself never took that step. (shrink)

The aim of this paper is to evaluate the level of gender bias in Aristotle’s Generation of Animals while exercising due care in the analysis of its arguments. I argue that while the GA theory is clearly sexist, the traditional interpretation fails to diagnose the problem correctly. The traditional interpretation focuses on three main sources of evidence: (1) Aristotle’s claim that the female is, as it were, a “disabled” (πεπηρωμένον) male; (2) the claim at GA IV.3, 767b6-8 that females are (...) a departure from the kind; and (3) Aristotle’s supposed claim at GA IV.3, 768a21-8 that the most ideal outcome of reproduction is a male offspring that perfectly resembles its father. I argue that each of these passages has either been misunderstood or misrepresented by commentators. In none of these places is Aristotle suggesting that females are imperfect members of the species or that they result from the failure to achieve some teleological goal. I defend the view that the GA does not see reproduction as occurring for the sake of producing males; rather, what sex an embryo happens to become is determined entirely by non-teleological forces operating through material necessity. This interpretation is consistent with Aristotle’s view in GA II.5 that females have the same soul as the male (741a7) as well as the argument in Metaphysics X.9 that sexual difference is not part of the species form but is an affection (πάθος) arising from the matter (1058b21-4). While the traditional interpretation has tended to exaggerate the level of sexism in Aristotle’s
developmental biology, the GA is by no means free of gender bias as some recent scholarship has claimed. In the final section of the paper I point to one passage where Aristotle clearly falls back on sexist assumptions in order to answer the difficult question, “Why are animals divided into sexes?”. I argue that this passage in particular poses a serious challenge
to anyone attempting to absolve Aristotle’s developmental biology of the charge of sexism. (shrink)

In this paper I explore Aristotle’s views on natural kinds and the compatibility of pluralism and realism, a topic that has generated considerable interest among contemporary philosophers. I argue that, when it came to zoology, Aristotle denied that there is only one way of organizing the diversity of the living world into natural kinds that will yield a single, unified system of classification. Instead, living things can be grouped and regrouped into various cross-cutting kinds on the basis of objective similarities (...) and differences in ways that subserve the explanatory context. Since the explanatory aims of zoology are diverse and variegated, the kinds it recognizes must be equally diverse and variegated. At the same time, there are certain constraints on which kinds can be selected. And those constraints derive more from the causal structure of the world than from the proclivities of the classifier (hence the realism). This distinguishes Aristotle’s version of pluralistic realism from those contemporary versions (like Dupré’s “promiscuous realism”) that treat all or most classifications of a given domain as equally legitimate and not just a sub-set of kinds recognized by the science that studies it. By contrast, Aristotle privileges scientifically important kinds on the basis of their role in causal investigations. On this picture natural kinds are those kinds with the sort of causal structure that allows them to enter into scientific explanations. In the final section I argue that Aristotle’s zoology should remain of interest to philosophers and biologists alike insofar as it combines a pluralistic form of realism with a rank-free approach to classification. (shrink)

The focus of this paper is Aristotle's solution to the problem inherited from Socrates: How could a man fail to restrain himself when he believes that what he desires is wrong? In NE 7 Aristotle attempts to reconcile the Socratic denial of akrasia with the commonly held opinion that people act in ways they know to be bad, even when it is in their power to act otherwise. This project turns out to be largely successful, for what Aristotle shows us (...) is that if we distinguish between two ways of having knowledge (potentially and actually), the Socratic thesis can effectively account for a wide range of cases (collectively referred to here as drunk-akrasia) in which an agent acts contrary to his general knowledge of the Good, yet can still be said to know in the qualified sense that his actions are wrong. However, Book 7 also shows that the Socratic account of akrasia cannot take us any farther than drunk-akrasia, for unlike drunk-akrasia, genuine akrasia cannot be reduced to a failure of knowledge. This agent knows in the unqualified sense that his actions are wrong. The starting-point of my argument is that Aristotle's explanation of genuine akrasia requires a different solution than the one found in NE 7 which relies on the distinction between qualified and unqualified knowing: genuinely akratic behaviour is due to the absence of an internal conflict that a desire for the proper pleasures of temperance would create if he could experience them. (shrink)

It has become somewhat of a platitude to call Aristotle the first epigenesist insofar as he thought form and structure emerged gradually from an unorganized, amorphous embryo. But modern biology now recognizes two senses of “epigenesis”. The first is this more familiar idea about the gradual emergence of form and structure, which is traditionally opposed to the idea of preformationism. But modern biologists also use “epigenesis” to emphasize the context-dependency of the process itself. Used in this sense development is not (...) simply the unfolding of a pre-determined sequence of changes specified in advance by the organism’s genotype. It is also sensitive to inputs from the internal and external environment, which help determine in real-time which of the many potential developmental pathways are actualized during the process. Within this paradigm developing embryos are viewed as dynamic and responsive systems that react to inputs from the internal and external environment ‘on the fly’. In this paper I argue that, while Aristotle was an epigenesist in the first sense, he would have rejected epigenesis in the more modern sense. First, Aristotle’s model of choice for a developing embryo is the automaton that executes a set of preset movements (GA 734b9-13, 741b7-15). The automatons he has in mind are not dynamic AI systems capable of modifying their behaviour on the fly in response to environmental cues but completely deterministic mechanisms whose movements are fixed by their original design. Second, given Aristotle’s views about the different kinds of causal powers there are, it looks like only intentional agents endowed with actual decision-making powers could be capable of the sort of plasticity at the core of a more dynamic epigenesis. For that kind of epigenesis requires powers for alternative outcomes, and Aristotle is explicit that such powers require rational desires (προαίρεσις) that control which of those alternatives to bring about. If I am right, then he could not have made sense of the idea of a developing embryo (as a non-intentional system) making adjustments to its phenotype on the fly in response to emerging problems and opportunities, given the conceptual resources available to him. (shrink)

In this paper I examine the role of optimality reasoning in Aristotle’s natural science. By “optimality reasoning” I mean reasoning that appeals to some conception of “what is best” in order to explain why things are the way they are. We are first introduced to this pattern of reasoning in the famous passage at Phaedo 97b8-98a2, where (Plato’s) Socrates invokes “what is best” as a cause (aitia) of things in nature. This passage can be seen as the intellectual ancestor of (...) Aristotle’s own principle, expressed by the famous dictum “nature does nothing in vain but always what is best for the substance from among the possibilities concerning each kind of animal” (Progression of Animals II, 704b12-18). The paper is focused around exploring three questions that arise in connection with Aristotle’s use of this optimality principle: (1) How do we understand the concept of “the best” at work in the principle? (2) How does Aristotle conceive of “the range of possibilities”? And, finally, (3) what role does optimality reasoning play in Aristotle’s natural science? Is it a special form of demonstration in which the optimality principle functions as one of its premises, or is it a heuristic device that helps uncover those causally relevant features of a natural substances that ultimately serve as middle terms in demonstrations? In the final section I return to the comparison between Plato and Aristotle and argue that, while both see the natural world as the product of an optimizing agent and while both see this assumption as licensing a pattern of reasoning that appeals to a certain conception of “the best”, they disagree fundamentally over what the optimization agent is and how it operates. Thus, despite their general agreement, it would be a mistake to think that Aristotle simply took over Plato’s use of optimality reasoning without significant modifications. (shrink)

Historically embryogenesis has been among the most philosophically intriguing phenomena. In this paper I focus on one aspect of biological development that was particularly perplexing to the ancients: self-organisation. For many ancients, the fact that an organism determines the important features of its own development required a special model for understanding how this was possible. This was especially true for Aristotle, Alexander, and Simplicius, who all looked to contemporary technology to supply that model. However, they did not all agree on (...) what kind of device should be used. In this paper I explore the way these ancients made use of technology as a model for the developing embryo. I argue that their different choices of device reveal fundamental differences in the way each thinker understood the nature of biological development itself. In the final section of the paper I challenge the traditional view (dating back to Alexander's interpretation of Aristotle) that the use of automata in GA can simply be read off from their use in the de motu. (shrink)

In this paper, I argue that the Parts of Animals [PA] should be seen as continuing in the tradition of those earlier natural scientists who “investigated the material principle of things and that s...

This paper focuses on two methodological questions that arise from Plato’s account of collection and division. First, what place does the method of collection and division occupy in Plato’s account of philosophical inquiry? Second, do collection and division in fact constitute a formal “method” (as most scholars assume) or are they simply informal techniques that the philosopher has in her toolkit for accomplishing different philosophical tasks? I argue that Plato sees collection and division as useful tools for achieving two distinct (...) goals – generating real definitions and discovering the basic natural kinds of a given domain of knowledge – both of which occupy a preliminary stage in his account of philosophical inquiry. As to the second question, I claim that the evidence for seeing collection and division as a formal method is weak. Although Plato calls the procedure a technê and a methodos, he makes no real attempt to formalize it in any way. For Plato, collection and division do not constitute an algorithmic process that can be learned from a rule book. Instead the ability to collect and divide properly are skills that good dialecticians must acquire through the kind of hands-on training illustrated by the Sophist and Statesman. Whereas Aristotle insists on formal rules for making proper divisions, Plato seems to emphasize the need to recognize where the natural joints of the world are. In this sense, Plato’s Sophist and Statesman and Aristotle’s Topics and Analytics present two very different pictures of collection and division. (shrink)

This chapter contains sections titled: The Place of GA in Aristotle's Philosophy Male and Female as archai The Nature of Sperma The Transmission of Soul: GA II.3 Reproductive Hylomorphism Inheritance Individual Forms Four Causes of Generation Notes Bibliography.

The intellectual history of evolutionary theory really does not begin in earnest until the late seventeenth/early eighteenth century. Prior to that, the idea that species might have evolved over time was not a serious possibility for most naturalists and philosophers. There is certainly no substantive debate in antiquity about evolution in the modern sense. There were really only two competing explanations for how living things came to have the parts they do: design or blind chance. Ancient Greek Atomism, for example, (...) taught that all composite bodies, including living things, are generated through the random collision of atoms as they rebel and move in the void. Plato and Aristotle both dismissed this possibility on the grounds that living things are too complex and too well-adapted to be products of chance. This eventually became the central premise in Galen’s own Argument from Design. That species forms might have gradually evolved over time by a process of natural selection was not seen as a plausible alternative. Of course, such a theory had been proposed by Empedocles in the fifth century BCE. But because his theory still relied heavily on chance, it was not taken seriously by any of the later ancient Greek or Roman thinkers. My aim in this paper is to investigate the reasons why evolutionary thinking failed to gain momentum in antiquity after its introduction by Empedocles. (shrink)

Aristotle on Definition is an exceptional piece of scholarship. Its arguments are carefully justified, sophisticated, and far-reaching. Those interested in Aristotle's theory of definition will find this book a nice compliment to David Charles' Meaning and Essence. Whereas Charles examines Aristotle's theory of syllogistic definitions, Deslauriers focuses mainly on the concept of immediate definitions .It is impossible to do justice to the entire book. In what follows I shall attempt to isolate one of its main lines of argument to give (...) the reader a sense of the book's content.In chapter 2, Deslauriers draws our attention to four types of definition identified in the Posterior Analytics and sets out to explore the differences between them. She focuses on two basic kinds of definition, what she calls "syllogistic" definitions and "immediate" definitions. Syllogistic definitions are accounts that indicate what something is through a middle term and are formulated by rearranging the terms of a demonstrative syllogism, whereas immediate definitions express propositions that cannot be displayed in demonstrations. Instead, they are arrived at and displayed through division by genus and differentiae. According to Deslauriers, Aristotle's account of these two basic kinds of. (shrink)

L’auteur part de la thèse défendue par Reeve dans Practices of Reason. Aristotle’s Nicomachean Ethics (Oxford, 2002) : l’éthique est comparable à une science. Il en distingue trois interprétations : (1) la délibération possède la forme d’un syllogisme scientifique ; (2) l’éthique est elle-même une science, interprétation qui peut se comprendre de deux façons : (2A) l’éthique vise à produire une étude scientifique du bien humain ; (2B) l’éthique aristotélicienne emprunte ses principes et ses normes à la philosophie des sciences (...) ; c’est cette dernière interprétation qui est jugée la plus intéressante et la plus prometteuse. En s’appuyant sur une conception stricte de la démonstration et de la science (celle exposée en EN VI 7), l’auteur finalement refuse la première interprétation (1). Il discute la première version de la seconde interprétation (2A) qu’il accepte avec certaines restrictions : « La conception aristotélicienne de l’éthique est compatible avec la possibilité d’une véritable science démonstrative de l’éthique. » Enfin, il examine la seconde version (2B) selon laquelle les normes de l’éthique sont tirées de la philosophie aristotélicienne des sciences en s’intéressant au cas particulier de la méthode pour établir des définitions scientifiques exposée dans les Seconds analytiques. L’article laisse cependant ouverte la question précise de savoir quelles normes exactement l’ Éthique emprunte à la théorie des sciences. (shrink)

Many psychologists studying lay belief attribution and behavior explanation cite Donald Davidson in support of their assumption that people construe beliefs as inner causes. But Davidson’s influential argument is unsound; there are no objective grounds for the intuition that the folk construe beliefs as inner causes that produce behavior. Indeed, recent experimental work by Ian Apperly, Bertram Malle, Henry Wellman, and Tania Lombrozo provides an empirical framework that accords well with Gilbert Ryle’s alternative thesis that the folk construe beliefs (...) as patterns of living that contextualize behavior. (shrink)

Devin Henry offers a comprehensive study of Aristotle’s hylomorphic account of substantial generation. In particular, he argues that, in Generation of Animals, Aristotle defends a view that Henry calls “reproductive hylomorphism” : an application of the hylomorphic model of substantial generation to the central case of the generation of animals. In this review, I explain Henry's view and offer some criticisms of his two-stage model of reproductive hylomorphism that distinguishes embryogenesis from morphogenesis.

Ancient Philosophy Today, Volume 4, Issue 2, Page 241-247, October, 2022.

Devin Henry’s excellent book takes on Aristotle’s theory of substantial generation. Substantial generation is the sort of “unqualified” change in which a substance comes to be: it is what happens when Socrates comes to be, rather than when he grows a centimetre taller (1). Henry’s overarching argument is that “Aristotle employs a single model of generation throughout the corpus”: the hylomorphic model. -/- This argument comes in two stages. Chapters 2-4 introduce the three principles of the hylomorphic (...) model: matter, form, and efficient cause. Chapters 5-8 consider these principles in Aristotle’s account of animal generation. This discussion is framed by an introduction and two chapters that consider the wider context: Aristotle’s reaction to his intellectual inheritance and his cosmological perspective on generation. -/- The result is a thoughtful, systematic account of Aristotle’s theory and the biological details that fill it out in practice. Its central moves are philosophically rich, well-argued, and responsive to a variety of texts. Indeed, a significant strength is its sustained attention to not only to the implications of the Physics and GC’s more abstract framework for our understanding of the biological details, but also the puzzles those details raise for the theoretical account. Moreover, its careful analysis and formulations of existing debates point up important questions. (shrink)

In this paper, I offer three suggestions regarding the role of Aristotle’s concept of analogy in biology as alternatives to the views defended by Devin Henry. First, I argue that the concept of analogy in Aristotle’s biological treatises points to a similarity in capacity between parts. Second, that it is mostly of methodological importance for the practice of explanation rather than for the practice of classification. And finally, that it is used with regard to parts that are visibly (...) different and incommensurate rather to parts that possess different material natures. (shrink)

"Darkness from vain philosophy" -- Hobbes's natural philosophy -- Religion and theology I: "of religion" -- Religion and theology II: Hobbes's natural theology -- Religion and theology III: Hobbes's confrontation with the Bible -- Hobbes's political philosophy I: man and morality -- Hobbes's political philosophy II: the Hobbesian commonwealth -- Appendix: the engraved title page of Leviathan.

This article reconsiders the relationship between interpretivism about belief and normative standards. Interpretivists have traditionally taken beliefs to be fixed in relation to norms of interpretation. However, recent work by philosophers and psychologists reveals that human belief attribution practices are governed by a rich diversity of normative standards. Interpretivists thus face a dilemma: either give up on the idea that belief is constitutively normative or countenance a context-sensitive disjunction of norms that constitute belief. Either way, interpretivists should embrace the intersubjective (...) indeterminacy of belief. (shrink)

In Go Set a Watchman, Harper Lee reveals that American man of integrity Atticus Finch harbors deep-seated racist beliefs. Bob Ewell, Finch's nemesis in To Kill a Mockingbird, harbors the same beliefs. But the two men live out their shared racist beliefs in dramatically different fashions. This article argues that extant dispositionalist accounts of belief lack the tools to accommodate Finch and Ewell's divergent styles of believing. It then draws on literary and philosophical character studies to construct the required tools.

In a recent article in this journal, Krzysztof Poslajko reconstructs—and endorses as probative—a dilemma for interpretivism first posed by Alex Byrne. On the first horn of the dilemma, the interpretivist takes attitudes to emerge in relation to an ideal interpreter (and thus loses any connection with actual folk psychological practices). On the second horn, the interpretivist takes attitudes to emerge in relation to individuals’ judgements (and thus denies the possibility of error). I show that this is a false dilemma. By (...) taking a model-theoretic approach to folk psychology, and marrying interpretivism with dispositionalism, interpretivists can viably reject the notion of an ideal (or canonical) interpreter—and relativize attitudes to actual lay interpreters—without taking on board the unacceptable epistemological consequences of allowing that attitudes are judgement-dependent. (shrink)

Humanist ideas in education have been promoted by both Western thinkers and classical wisdom texts of Asia. Exploring this connection, I examine the educational philosophy of an iconic ancient Tamil text, the Thiruvalluvar Kural, by juxtaposing it with a contemporary humanist classic, Paulo Freire’s Pedagogy of the Oppressed. As this comparative study reveals, both texts offer humanist visions of relevance to education, politics, and society. Notably, however, the Kural takes what might be described as a more mainstream humanist stance vis-à-vis (...) Freire’s radical humanist approach. Nevertheless, both educational philosophies share a common humanist bond representing important breakthroughs within their own given contexts. More specifically, the Kural supports a shift in consciousness and social practices away from caste rigidity, superstition, and pre-humanist beliefs while Freire championed transitioning from rigid, top-down and alienating educational delivery models and economic systems to learning processes and societies that are more democratized, dialogic and egalitarian. (shrink)

In this article, I explore how researchers’ metaphysical commitments can be conducive—or unconducive—to progress in animal cognition research. The methodological dictum known as Morgan’s Canon exhorts comparative psychologists to countenance the least mentalistic fair interpretation of animal actions. This exhortation has frequently been misread as a blanket condemnation of mentalistic interpretations of animal behaviors that could be interpreted behavioristically. But Morgan meant to demand only that researchers refrain from accepting default interpretations of (apparent) actions until other fair interpretations have been (...) duly considered. The Canon backfired largely because of Morgan’s background metaphysical commitment to a univocal, hierarchical, and anthropocentric account of cognitive architecture. I make the case that, going forward, comparative psychologists would do well to pair judicious use of Morgan’s Canon with an openness to the existence of non-humanlike animal minds comprising phenomena belonging to distinct cognitive and folk psychological ontologies. And I argue that this case gives us pragmatic reason to reconcile deep—e.g., psychofunctionalist—and superficial—e.g., dispositionalist—approaches to the metaphysics of belief. (shrink)

I have proposed wedding the theories of belief known as dispositionalism and interpretivism. Krzysztof Poslajko objects that dispositionalism does just fine on its own and, moreover, is better off without interpretivism’s metaphysical baggage. I argue that Poslajko is wrong: in order to secure a principled criterion for individuating beliefs, dispositionalism must either collapse into psychofunctionalism (or some other non-superficial theory) or accept interpretivism’s hand in marriage.

A hypnotic induction produces different patterns of spontaneous experiences across individuals. The magnitude and characteristics of these responses covary moderately with hypnotic suggestibility, but also differ within levels of hypnotic suggestibility. This study sought to identify discrete phenomenological profiles in response to a hypnotic induction and assess whether experiential variability among highly suggestible individuals matches the phenomenological profiles predicted by dissociative typological models of high hypnotic suggestibility. Phenomenological state scores indexed in reference to a resting epoch during hypnosis were submitted (...) to a latent profile analysis. The profiles in the derived four-class solution differed in multiple experiential dimensions and hypnotic suggestibility. Highly suggestible individuals were distributed across two classes that exhibited response patterns suggesting an inward attention subtype and a dissociative subtype. These results provide support for dissociative typological models of high hypnotic suggestibility and indicate that highly suggestible individuals do not display a uniform response to a hypnotic induction. (shrink)